My yahoo will not open, I get an error that says Internet Explorer can not open it.?

1. Disconnect all unused Tabs and Explorers and Unneeded software using excessive

internet while accessing Yahoo Mail Beta.

1a Wait until all mail is downloaded before trying to open messages.

2.Your Firewall can sometimes block Yahoo Mail Beta.

3.Try logging out of your Standalone MSN/ Yahoo Messenger. Your Beta uses Chat in

the same ID.

4. To turn off friendly HTTP error messages

In Internet Explorer, click the Tools button, and then click Internet Options.

Click the Advanced tab, and then scroll down to the Browsing section.

Clear the Show friendly HTTP error messages check box, and then click OK.